Mariah Sinclair is a book cover designer specializing in cozy mystery, paranormal cozy, historical cozy mystery, and paranormal women’s fiction. Since 2016, she has designed over 1,500 book covers for independent authors, and her work regularly appears on Amazon’s Top 100 Cozy Mystery bestseller lists. She is based in New Orleans, Louisiana.

​

Before focusing on book covers, Mariah spent years working at advertising agencies as a designer and digital marketer, serving Fortune 500 companies and the City of Los Angeles. She designed her first book cover in 2001 and opened her cover design studio in 2016. That advertising background—understanding how to capture attention quickly, communicate a brand at a glance, and design for a specific audience—is the foundation of every cover she creates.

​

Mariah’s covers are designed to sell books. She approaches every project from the reader’s perspective, studying what’s performing in each subgenre and designing covers that look like they belong alongside Amazon’s current bestsellers. Her clients include debut authors publishing their first cozy mystery and established series authors with dozens of titles. She designed the covers for Tonya Kappes’ Criminals & Campers series—one of the bestselling cozy mystery series on Amazon—and has designed covers for top-ranked indie titles across culinary cozies, coffee shop mysteries, paranormal cozies, pet cozies, and more.

​

She offers three core services: custom cozy mystery book cover design (starting at $375 for a first-in-series ebook cover), the Makeover Bundle ($975 for three ebook cover redesigns for an existing series), and premade cozy mystery covers available through her Payhip shop. Add-ons include paperback wraps, hardback dust jackets, audiobook covers, and 3D box set images.

Mariah is known for creating cohesive series branding—consistent typography, color palettes, and illustration styles that make multi-book series instantly recognizable to readers. She works with authors across all major cozy mystery subgenres, including culinary, paranormal, pet, coffee shop, craft, historical, and holiday-themed mysteries. Each subgenre has its own visual conventions, and Mariah tailors every cover to match the expectations readers have when browsing that category.

​

She lives in New Orleans with her two cats, Brulée and Clouseau.

​

Last updated: March 2026